Session

Overview: Advances in radiation technology and imaging allow for highly accurate radiation treatments enabling the use of reirradiation as an increasing option for several cancers, including thoracic, head and neck cancer, brain and spine tumors; however, retreatments remain challenging because prior radiation dose is often close to the tolerance limit of surrounding normal structures. Published data suggest the efficacy and safety of a repeated course of radiotherapy, although prospective validation of this strategy is still pending. The session will provide an overview on current reirradiation strategies and issues. Technical aspects and clinical outcomes of reirradiation, radiological changes and toxicity at follow-up will be addressed in four different presentations.